The centenarian said the last time he was on a jet ski was when he was 99 years old and he was excited to get back out on the water this year.

“It’s a fun thing because they go so fast, and you push that little lever and it goes 'pffftttt,' and I got pictures of me taking up on my jet ski when I was 99 then I got some more... on my last birthday," Knottnerus said.

Knottnerus has done a lot in his long life.

He served four years in the Army during World War II and was married to his wife, Sophina, for over 60 years. They had four children, eight grandchildren and 18 great-grandchildren.